Wheels of Time 50143 N Scale 53'6" General Service Flatcar Southern Pacific SP 507769 Era_1939-1950s + and in 1949 three units

and in 1949 three units went to the Chicago

Wheelbase: 325

312 mm wheelbase

Easily enlarged by combining kits (each sold separately)

add 5828 body accessories

Wheels of Time 50143 N Scale 53'6" General Service Flatcar Southern Pacific SP 507769 Era_1939-1950s + and in 1949 three unitsWheels of Time 50143 N Scale 53'6" General Service Flatcar Southern Pacific SP 507769 These 53' 6" flatcars were constructed with a welded fish belly steel frame in contrast to the cast steel GSI frame. The fish belly frame provided an optimal distribution of tension and compression forces from the center of the car to the bolsters. Think of it as a bridge. In addition, fabricating a welded frame was far less labor intensive than an equivalent riveted